Unexpected exception with an optional Postgis.Geometry column

CREATE EXTENSION postgis;
CREATE TABLE t_coordonnees
(
  id SERIAL NOT NULL PRIMARY KEY,
  wgs84 geometry(Geometry,4326)
);

io.debezium.connector.postgresql.RecordsSnapshotProducer - unexpected exception
org.apache.kafka.connect.errors.SchemaBuilderException: Invalid SchemaBuilder call: optional has already been set.
	at org.apache.kafka.connect.data.SchemaBuilder.checkNull(SchemaBuilder.java:406) ~[connect-api-0.10.2.1.jar:?]
	at org.apache.kafka.connect.data.SchemaBuilder.optional(SchemaBuilder.java:98) ~[connect-api-0.10.2.1.jar:?]
	at io.debezium.relational.TableSchemaBuilder.addField(TableSchemaBuilder.java:361) ~[debezium-core-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.relational.TableSchemaBuilder.lambda$create$0(TableSchemaBuilder.java:108) ~[debezium-core-0.10.0.Beta2.jar:0.10.0.Beta2]
	at java.util.ArrayList.forEach(ArrayList.java:1257) ~[?:1.8.0_191]
	at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) ~[?:1.8.0_191]
	at io.debezium.relational.TableSchemaBuilder.create(TableSchemaBuilder.java:99) ~[debezium-core-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.relational.RelationalDatabaseSchema.buildAndRegisterSchema(RelationalDatabaseSchema.java:126) ~[debezium-core-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.connector.postgresql.PostgresSchema.refreshSchema(PostgresSchema.java:171) ~[debezium-connector-postgres-0.10.0.Beta2.jar:0.10.0.Beta2]
	at java.util.concurrent.ConcurrentHashMap$KeySetView.forEach(ConcurrentHashMap.java:4649) ~[?:1.8.0_191]
	at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) ~[?:1.8.0_191]
	at io.debezium.connector.postgresql.PostgresSchema.refreshSchemas(PostgresSchema.java:162) ~[debezium-connector-postgres-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.connector.postgresql.PostgresSchema.refresh(PostgresSchema.java:95) ~[debezium-connector-postgres-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.connector.postgresql.RecordsSnapshotProducer.takeSnapshot(RecordsSnapshotProducer.java:189) ~[debezium-connector-postgres-0.10.0.Beta2.jar:0.10.0.Beta2]
	at io.debezium.connector.postgresql.RecordsSnapshotProducer.lambda$start$0(RecordsSnapshotProducer.java:87) ~[debezium-connector-postgres-0.10.0.Beta2.jar:0.10.0.Beta2]

CREATE EXTENSION postgis;
CREATE TABLE t_coordonnees
(
  id SERIAL NOT NULL PRIMARY KEY,
  wgs84 geometry(Geometry,4326) NOT NULL
);